The Chelsea 281GMFJP-D5XV or 281GMFJPD5XV is a genuine Chelsea 281 Series Power Take-Off assembly, hydraulically shifted (PowerShift) for continuous-duty operation. Designed for automatic transmissions with a 10-bolt aperture, this series is commonly applied on Allison transmissions in fire and rescue, refuse, pumper/cleaner, and truck crane vocations. The 281 Series features a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between the housing and bearing cap for improved clamp load, and clutch pack steel discs increased 80% in thickness to resist premature wear. Nine speed ratios are available across the series, and an Electronic Overspeed Control (EOC) option protects driven equipment. Call us to confirm proper fit and ratio for your application.
Reference documents available from Parker Chelsea: 281/288 Series Parts List (HY25-2281-M1/US), 267/281/288/871/878 Series Owner's Manual, and 281 Series Sales Literature. Contact Pro Gear and Transmission to confirm the correct configuration for your transmission and application.
Features
Chelsea 281 Series PowerShift (hydraulic shift) PTO, rated for continuous operation
10-bolt mounting aperture, compatible with Allison automatic transmissions
Ductile iron bearing cap, 117% stronger than the gray iron predecessor
O-ring sealing between housing and bearing cap improves clamp load and reduces vibration
80% thicker steel clutch pack discs for extended service life
Electronic Overspeed Control (EOC) option protects driven hydraulic equipment
Tech Specs
- Shift Type: PowerShift (Hydraulic)
- Mounting Type: 10-Bolt
- Transmission Compatibility: Allison automatic transmissions
- Continuous Operation: Yes
- Continuous Torque (series rating): 390 lb-ft / 529 Nm (verify actual rating for your application)
- Output Power (series): 56+ HP / 51+ kW
- Shaft Power: 37 HP at 500 RPM, 74 HP at 1,000 RPM
- Speed Ratios: Nine ratios available across the series
- Lubrication: Pressure Lube and Wet Spline options available
- Output Shaft Options: SAE B (7/8 in. - 13T) pump spline, SAE C (1-1/4 in. - 14T) pump spline, 1-1/4 in. round shaft with 5/16 in. key, 3/4 in. - 11T pump spline, DIN 5462 pump spline, 1410 companion flange, DIN 120 flange, DIN 100 flange
- Output Flange Options: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Typical Markets: Fire and rescue, refuse, pumper/cleaner, truck cranes
- Part Number: 281GMFJP-D5XV or 281GMFJPD5XV
Additional Information
The Chelsea 281 Series is the successor to the widely used 280 Series PTO. Structural and sealing improvements were introduced to address vibrational stresses from modern engine designs. The SmartStart feature reduces shock load at engagement for compatible applications, and rotatable cast iron flanges allow pump clearance to be adjusted. The wet spline lubrication option provides 7 to 10 times greater output shaft service life compared to a standard dry spline configuration.Reference documents available from Parker Chelsea: 281/288 Series Parts List (HY25-2281-M1/US), 267/281/288/871/878 Series Owner's Manual, and 281 Series Sales Literature. Contact Pro Gear and Transmission to confirm the correct configuration for your transmission and application.
